As the generations progress, feather length will increase because females do not prefer a specific length tail, but a longer-than-average tall. Eventually tail length will increase to the point （ ） the liability survival is matched by the sexual attractiveness of the trait and an equilibrium will be established.
A.that B.where C.which D./
A vile smell hung in the air.
A.burnt B.unpleasant C.sweet D.fruity
It would be difficult for a man of his political affiliation,（ ） , to become a senator¬ from the South.
A.no mater he has charm and capability B.though charming and capable is he C.however charming and capable D.charming and having capability
I intended to make up for this （ ）in manners at the next party.
A.stupidity B.lapse C.wrongdoing D.offence
The flowers （ ）from lack of water.
A.withered B.flourished C.vanished D.stopped growing
As one of the youngest professors in the university, Mr. Brown is certainly on the （ ）of a brilliant career.
A.porch B.edge C.course D.threshold
Opinion poll surveys show that the public see scientists in a rather unflattering light.Commonly the scientist is also seen as being male. It is true that most scientists are male, but the picture of science as a male activity may be a major reason why fewer girls than boys opt for science, except when it comes to biology, which is seen as "female".The image most people have of science and scientists comes from their own experience of school science, and from the mass media_ Science teachers themselves See it as a problem that so many school pupils find school science an unsatisfying experience, though over the last few years more and more pupils, including girls, have opted for science subjects.In spite of excellent documentaries, and some good popular science magazines, scientific modes in the media still usually alternate between miracle and scientific threat. The popular stereotype of science is like the magic of fairy tales: it has potential for enormous good or awful harm. Popular fiction is full of “good” scientists saving the world, and "mad" scientists trying to destroy it.From all the many scientific stories which might be given media treatment, those which are chosen are usually those which can be framed in terms of the usual news angles: novelty, threat, conflict or the bizarre. The routine and often tedious work of the scientist slips from view, to be replaced: with a picture of scientists forever offending public moral sensibilities (as in embryo research), threatening public health (as in weapons research), or fighting it out with each other (in giving evidence at public enquiries such as those held on the issues connected with nuclear power).The mass media also lends to over-personalize scientific work, depicting it as the product of individual genius, while neglecting the social organization which makes scientific work possible. A further effect of this is that science comes to be seen as a thing in itself: a kind of unpredictable force a tide of scientific progress.It is no such thing, of course. Science is what scientists do; what they do is what a particular kind of society facilitates, and what is clone with their work depends very much on who has the power to change their discoveries into technology, and what their interests are.1.According to the passage, ordinary-people have a poor opinion of science and scientists partly because （ ）.2.Fewer girls than boys study science because （ ）.3.Media treatment of science tends to concentrate on （ ）.4.According to the author, over-personalization of scientific work will lead science （ ）.5.According to the author, what a scientist does（ ）.
A.of the misleading of the media B.opinion polls are unflattering. C.scientists are shown negatively in the media D.science, is considered to be dangerous
问题2：
A.they think that science is too difficult B.they are often unsuccessful in science at school C.science is seen as a man’s job D.science is considered to be tedious
问题3：
A.the routine everyday work of scientists B.discoveries that the public will understand C.the more sensational aspects of science D.the satisfactions of scientific work
问题4：
A.isolation from the rest of the world B.improvements on school system C.association with "femaleness" D.trouble ha recruiting young talent
问题5：
A.should be attributed to his individual genius B.depends on the coordination of the society C.shows his independent power D.is unpredictable
Bruce Stephen gripped （ ）the wheel hard as the car bounced up and down.
A.stirring B.driving C.steering D.revolving
Electrical energy may be separated into two （ ）components as positive and negative.
A.specialized B.told C.specified D.said
It is often the children who truly lead the elders into America,the sons who take their fathers to their first baseball game or shepherd them to their first rock concert or give them a real sense that they （ ） America’s future.
A.have an impact on B.have a facility for C.have a grasp of D.have a stake in
There were still a few surprises, as a squeal here and there in the dark announced, but we did learn to “ see with our feet" —lessons in trail Braille.
A.divergence B.scream C.gradation D.strand
His （ ）life as a revolutionary made him highly adaptable to various kinds of hard living conditions.
A.erratic B.eccentric C.erroneous D.inured
Under the present system, state enterprises must （ ）all profits to the government.
A.turn down B.turn up C.turn out D.turn in
（ ）efforts are needed in order to finish important but unpleasant tasks.
A.Consecutive B.Condensed C.Perpetual D.Persistent
Meeting is, in fact, a necessary though not necessarily productive psychological side show. Perhaps it is our civilized way to moderating, if not preventing, change.
A.promoting B.impeding C.tempering D.arresting
Disagreements among economists are legendary, but not on the issue of free trade. A recent survey of prominent economists—both conservative and liberal—concluded that “an economist who argues for restricting international trade is almost as common today as a physician who favors leeching.”Why the consensus? International free trade, economists agree, makes possible higher standards of living all over the globe. The case for free trade rests largely on this principle: as long as trade is voluntary, both partners benefit; otherwise they wouldn't trade. The buyer of a shirt, for example, values the shirt more than the money spent, while the seller values the money more. Both are better off because of the sale. Moreover, it doesn’t matter whether the shirt salesman is from the United States or Hong Kong (or anywhere else).The vast majority of American manufactures face international competition. This competition forces companies to improve quality and cut costs. By contrast, protectionism encourages monopoly, lower quality and higher, prices. Americans pay an enormous price for protectionism—over $ 60 billion a year or $ 1000 for a family of four. Thanks to protectionism, for example, American consumers pay twice the world price for sugar.Free trade also makes the world economy more efficient, by allowing nation to capitalize on their strengths. The United States has an advantage in food production, for instance, while Saudi Arabia has an advantage in oil. The Saudis could undertake massive irrigation to become self-sufficient in food, but it is more economical for them to sell oil and purchase food from us. Similarly, we could become self-sufficient in petroleum by squeezing more out of oil shale. But it is much less costly to buy some of our oil from Saudi Arabia. Trade betwe
She felt quite （ ）after she lost the job and did not know whether she could find a job at such an old age.
A.compressed B.depressed C.impressed D.oppressed
The English language contains a (n) （ ）of words which are comparatively seldom used in ordinary conversation.
A.altitude B.latitude C.multitude D.attitude
Is it true that the company is going bankrupt? I didn’t mean to eavesdrop what you said. I just （ ）it.
A.overcame B.overwhelmed C.overheard D.overlooked
There is no reason to insult and （ ）the man simply because you do not agree with him.
A.depict B.enervate C.distort D.defame